Fittings/Couplers Question(s)

hks003 · Feb 19, 2020

Hi,

I'm finally getting serious about getting a diverter valve and everything else needed for it ordered. I found the summit kit below, but now I'm at a loss as to what I need to get it connected to my tractor, an LS G3038.

Pictured below are my hydraulic circuit, hydraulic parts list, and pictures of the fittings on each end of my lines. The picture of the 90 degree fitting is going into one of the curl cylinders. There's also a link to the grapple I'm probably going to get (I know, it's not EA, but I just can't justify the price difference...). It shows to have 1/2" fittings, but my parts list has 3/8", so can I make that work? I'd get the 54" grapple if that makes a difference.

So, what fittings/couplers (is there a difference?) will I need in addition to the kit? I know I'll need at least two hoses to go from the diverter valve to the curl cylinders and then two more to go to the grapple.

I plan to mount it on the back side of the cross bar pictured below and use the existing hoses to go from the primary control valve to the diverter. Then two new hoses to go back to the cylinders and two more to the grapple. Am I missing anything? I have a bad habit of starting projects like this and not having all the parts, and with living where I do, that usually means several days waiting on parts with a piece of equipment taken apart and out of commission, so I'm trying to avoid that this time!

Thanks for the help!

Hydraulic Multiplier Selector Diverter Solenoid Valve w/ Switch & Ag Coupler Kit

Compact Tractor 48"-54"-6" HD Root Grapple Hydraulic - quick attach — MTL Attachments
View attachment 642013 View attachment 642014

ericm979 · Feb 19, 2020

It looks like your loader's quick connects are 3/8. 1/2 is the standard for implements. I'd use 1/2 for the implement end. The existing loader curl hoses from the quick connects to the tee that splits off to the two cylinders may have a JIC fitting. That's what it looks like. The loader on my Branson uses JIC 6 fittings. If you want to reuse those two hoses you'll need to figure out what the fittings are and then buy the right stuff to get it to the diverter. I'd wait to mount the diverter until you have the grapple so you can make sure the diverter will fit and the outlets are in the right place. There's not a huge amount of clearance in there and when you curl and dump the grapple it changes it's position quite a bit. When I ran hoses up from a rear remote to a bulkhead on the loader torque tube I had to make my bracket twice, because what I thought was the right angle turned out to be all wrong.

The existing loader hoses that you want to reuse may be a little too short to reach the diverter when positioned where you want it.

DiscountHydraulicHose has a free fitting guide that you can use to ID fittings.

LouNY · Feb 19, 2020

hks003 said:
Hi,

I'm finally getting serious about getting a diverter valve and everything else needed for it ordered. I found the summit kit below, but now I'm at a loss as to what I need to get it connected to my tractor, an LS G3038.

Pictured below are my hydraulic circuit, hydraulic parts list, and pictures of the fittings on each end of my lines. The picture of the 90 degree fitting is going into one of the curl cylinders. There's also a link to the grapple I'm probably going to get (I know, it's not EA, but I just can't justify the price difference...). It shows to have 1/2" fittings, but my parts list has 3/8", so can I make that work? I'd get the 54" grapple if that makes a difference.

So, what fittings/couplers (is there a difference?) will I need in addition to the kit? I know I'll need at least two hoses to go from the diverter valve to the curl cylinders and then two more to go to the grapple.

I plan to mount it on the back side of the cross bar pictured below and use the existing hoses to go from the primary control valve to the diverter. Then two new hoses to go back to the cylinders and two more to the grapple. Am I missing anything? I have a bad habit of starting projects like this and not having all the parts, and with living where I do, that usually means several days waiting on parts with a piece of equipment taken apart and out of commission, so I'm trying to avoid that this time!

Thanks for the help!

Hydraulic Multiplier Selector Diverter Solenoid Valve w/ Switch & Ag Coupler Kit

Compact Tractor 48"-54"-6" HD Root Grapple Hydraulic - quick attach — MTL Attachments
View attachment 642013 View attachment 642014 View attachment 642015 View attachment 642016 View attachment 642017 View attachment 642018 View attachment 642019 View attachment 642020

I'm guessing you are intending to mount the diverter valve on the loader cross tube and tie into the bucket curl cylinders in that area.
I would not swear to it but looking at your LL3104 hydraulic parts I see 3/4-16 UNF threads that thread would be for a
1/2" JIC flare or commonly called a -8 size fitting.
Looking at your pictures they do look like JIC flare fittings.
I usually order my hoses and fittings from Surplus Center.
Good Luck

hks003 · Feb 19, 2020

Good catch on the JIC fittings. I typed in 3/4 16 UNF into Google and got overwhelmed quick. I am curious as to how 3/4 16 UNF translates to 1/2" JIC though? Is the 3/4 not pertaining to inches?

Also, thanks for the heads up on waiting for the grapple to mount the valve, that makes sense.

Yeah, the existing hoses may be a little short. I may just order (4) 3 ft hoses with female 1/2" JIC fittings and male #8 SAE pipe fittings crimped on and get (2) 3 ft hoses with male #8 SAE pipe fittings and make 1/2" pioneer AG fittings. Does this sound right?

LouNY · Feb 19, 2020

The thread size is the same as a bolt size 3/4" fine thread.
Many of the JIC fittings charts will give you the thread sizes for the various fitting sizes.

hks003 · Feb 19, 2020

So the 1/2" is the tube size? Makes sense.

hks003 · Feb 20, 2020

Any suggestions on how how to tie in correctly with mounting on the cross bar? I don't think the original way I'd planned will work. See pictures below of the multi tap connections going to the curl circuit.

LouNY · Feb 20, 2020

You will need to break into the first set of couplings prior to the curl cylinders,
from the feed lines to the diverter valve from the diverter back to the lines.
Looking at the pictures the steel tee fittings with the hoses going to the curl cylinder,
break apart the Tee, hose to the in port of the diverter, hose from the diverter straight thru port back to the input side of the tee.
For both Tee's.
So from the steel lines with hoses to the diverter, hoses back to the tee' from the diverter,
then either the quick connects or hoses to quick connects from the diverter secondary ports.

hks003 · Feb 20, 2020

LouNY said:
I'm guessing you are intending to mount the diverter valve on the loader cross tube and tie into the bucket curl cylinders in that area.
I would not swear to it but looking at your LL3104 hydraulic parts I see 3/4-16 UNF threads that thread would be for a
1/2" JIC flare or commonly called a -8 size fitting.
Looking at your pictures they do look like JIC flare fittings.
I usually order my hoses and fittings from Surplus Center.
Good Luck

Back on these fittings... Online, I'm seeing 3/4 16 UNF listed as -12, not -8. And it shows a tube size of 1/2". Is this still a 1/2" JIC? The 1/2 20 UNF is listed as a -8 if that helps any.

hks003 · Feb 20, 2020

LouNY said:
You will need to break into the first set of couplings prior to the curl cylinders,
from the feed lines to the diverter valve from the diverter back to the lines.
Looking at the pictures the steel tee fittings with the hoses going to the curl cylinder,
break apart the Tee, hose to the in port of the diverter, hose from the diverter straight thru port back to the input side of the tee.
For both Tee's.
So from the steel lines with hoses to the diverter, hoses back to the tee' from the diverter,
then either the quick connects or hoses to quick connects from the diverter secondary ports.

Ok, that makes sense for sure. Any advice on how to make room for all that seeing as what's there currently is rigid pipe?